Is it true to purchase goods from Longgang, Shenzhen?

Generally speaking, if it's from Shenzhen, it's probably from Tong Ming cosmetics market. As long as it is a regular Tong Ming channel, it is guaranteed to be genuine. On the one hand, it is the supervision of cosmetics marketing department; On the other hand, it is a loss of ten to sign the agreement; On the other hand, many stalls spend millions or more on pre-purchase, warehouse and labor. How can it be worth the loss because of a little petty profit?